December 2025 Portfolio Update: S$59k Deployed, New Healthcare REIT, and a Stronger Bridge

Atrahasis Portfolio Key Numbers (26 Dec  2025)

MTD return (excluding contributions)0.59%Market Move/Starting Balance
Starting balance (1 Dec) S$2,869,684
Purchases S$44,289.8
Market moveS$16,953Includes trading fees
Dividends ReceivedS$3,977
Ending balance (26 Dec)S$2,930,876.6
Bridge Cash Bucket (BCB)S$165,000/$420,000 (39 % funded)
Dividend tapS$3,916.78 /mth(78.33% of Target)
Total (Including BCB) S$3,095,876.60

Note: Dividend tap refers to the portfolio average monthly dividend which is estimated from Snowball Analytics.

Welcome to my December 2025 Portfolio Update. The "boring" machine is working: S$44k into markets, S$15k into safety, and zero drama. In this December 2025 Portfolio Update, I break down exactly where S$59k of capital went—building the bridge and feeding the dividend tap.

Purchases (1-26 Dec)

  • C2PU REIT (Country Tilts): 4,600 shares, approx S$18,515

  • IWDA (Core): 100 shares, approx S$16,626

  • EXCS (EM ex China): 500 shares, approx S$4,280

  • AAA (AUD FX): 78 shares, approx S$3,374

  • BTC (Alternatives): 0.0136 BTC, approx S$1,499

Total deployed: approx S$44,289.8

Note: I also added S$15,000 to the Bridge Cash Bucket (BCB). This is a safety allocation, separate from the market deployments above.

December 2025 Portfolio Update: The End Game is Not Clever, It Is Repeatable

December is when markets slow down, people speed up, and everyone suddenly becomes a macro expert over kopi.

Atrahasis did not join the shouting. Since inception on 1 Oct 2025, the job has been simple: build a portfolio that can fund early retirement without requiring perfect timing or perfect emotions.

So this year-end update is less “look at the return” and more “is the machine getting sturdier”. In December, it did.

December’s backdrop, in Singapore terms

When people say “rates matter”, it sounds like finance jargon. It is actually everyday life.

Interest rates are essentially the price of money. When that rate moves, three things happen:

  1. Your safe options pay more or less. Think T-bills, SSBs, fixed deposits, and high-yield savings accounts.
  2. Borrowing costs change. Mortgages feel it, and REITs feel it too because they use debt to own property.
  3. Income assets get repriced. REIT yields are compared against safer yields, so REIT prices can swing even when nothing changes in the buildings.

I do not try to predict the next rate move. I just build the portfolio so it can live through whatever the weather decides to do.

The BCB is retirement insurance, not idle cash

The Bridge Cash Bucket exists for one job: reduce sequence of returns risk when I retire.

The dangerous scenario is not “markets drop”. The dangerous scenario is “markets drop early in retirement”, right when withdrawals begin. A funded cash bridge lets me spend from safer assets for a few years, instead of selling equities after a drawdown.

Also, this bucket is not sitting idle. It is intentionally spread across:

    • High-yield savings (for me, DBS Multiplier is currently yielding 4.1% due to me still drawing an income).
    • Liquid cash deposits.
    • SSBs (Singapore Savings Bonds).
    • T-bills.

Why I started a new position in Parkway Life Real Estate Investment Trust (C2PU)

C2PU is a healthcare REIT, and this was a new position for Atrahasis.

I am building the income sleeve with one clear goal: grow a reliable “dividend tap” with a long-term target of S$5,000 per month. Healthcare assets tend to be less economically sensitive than retail or office space, which is exactly what I want behind an income stream.

What I like about C2PU’s characteristics as an income holding:

    • Defensive demand. Hospitals and care facilities do not depend on consumer mood in the same way malls do.

    • Long lease structures. I want cashflows designed to be predictable, not constantly renegotiated.

    • Rent escalation. Built-in step-ups and inflation-linked mechanisms help the income stream keep up with rising costs.

    • Cost structure that behaves. Many healthcare leases push more property-level costs to the tenant, which helps protect distributions from cost inflation.

I built the position in three tranches simply to stay consistent without needing a perfect entry price.

    IWDA stays boring, because boring compounds

    IWDA remains the main growth engine. I keep buying it because it is broad, diversified, and does not require me to guess which region wins next quarter.

    AAA, EXCS, and Bitcoin stay in their lanes

    AAA: The main win is behaviour. Let distributions build up, then reinvest in batches. December was exactly that.

    EXCS: A diversification tilt, sized as a supporting actor.

    Bitcoin: A tiny satellite. One small buy, then back to real life.

    Key takeaways

    BCB top-ups are high certainty progress. They reduce sequence risk without needing a market call.

    BCB cash is working cash. HYSA, deposits, SSBs, and T-bills keep it liquid while still earning something.

    C2PU was a deliberate new income position. Defensive demand plus rent escalators fit the dividend tap build-out.

    The core stayed the core. IWDA keeps getting fed on schedule.

    Reinvesting distributions is part of the strategy. The AAA buy was compounding by design.

    Looking ahead to January 2026

    I am watching a few things, not to predict markets, but to decide where the next dollars should go.

    • Dividend tap progress toward S$5,000 per month

      • Why: Reliable income reduces pressure on drawdown decisions later and makes the portfolio feel more self-sustaining.

      • What I might do: Keep adding to quality income holdings when yield and fundamentals make sense. This could include more C2PU or other quality REITS.

      • What would change my mind: If chasing yield means taking fragile cashflows or excessive leverage risk, I will slow down.

    • Rates and cash yields

      • Why: They shape the opportunity cost between cash and income assets, and they influence funding costs for REITs.

      • What I might do: Keep building the bridge steadily. If cash yields fall meaningfully, I may lean more into durable income and core equity flows, still within rules.

    • Simple rebalancing signals

      • Why: I do not want any sleeve to become a runaway train.

      • What I might do: Pause buys in anything that becomes clearly oversized and redirect new cash to the lagging sleeve.

    Same process, new month. Boring is still beautiful.

    November 2025 Portfolio Update: Volatility on the Screen, Progress in the Plan

    Atrahasis Portfolio Key Numbers (1 Dec  2025)

    MTD return (excluding contributions)-0.89%Market Move/Starting Balance
    Starting balance (1 Nov) S$2,848,958.7
    Purchases S$46,446.6
    Market move-S$25,349.2Includes trading fees
    Dividends ReceivedS$5,172.3
    Ending balance (30 Nov)S$2,870,056.1
    Bridge Cash Bucket (BCB)S$150,000 (36% funded)
    Dividend tapS$3,811.25/mth(76.23% of Target)
    Total (Including BCB) S$3,020,056.1

    Note: Dividend tap refers to the portfolio average monthly dividend which is estimated from Snowball Analytics.

    November Portfolio Update

    Purchases (1-30 Nov)

    IWDA (Core): 90 shares @ 126.73 USD, approx S$15,284
    IB01 (Defensive): 110 shares @118.10 USD, approx S$17,000
    SGX:HMN (Country Tilts): 4300 shares @0.940 SGD, S$4,042
    BTC (Alternatives): 0.085003  BTC, approx S$10,479

    Total deployed: approx S$46,447

    November 2025 Portfolio Update– Volatility on the Screen, Progress in the Plan

    November looked dramatic on the charts but quite ordinary for the Atrahasis Portfolio. Stocks sold off, then snapped back. Tech sulked. Bitcoin threw a full‑on tantrum. Underneath all that noise, the portfolio quietly did what it’s built to do: collect income, lean into weakness, and keep risk spread across very different engines.

    The backdrop: a V‑shaped month and a crypto tantrum

    Global equities spent November zig‑zagging. Early in the month, markets were down roughly 4–5% from recent highs before staging a strong rebound into Thanksgiving. The S&P 500 and Dow ended the month with only marginal gains, while the Nasdaq actually finished about 1.5% lower as investors cooled on the frothier end of tech.

    Beneath that, the narrative was all about interest rates. Expectations for a December Federal Reserve rate cut climbed sharply, and longer‑dated yields drifted lower again. That gave Treasuries their fourth straight month of gains and helped stabilise risk assets after the early wobble.

    The real drama, though, came from Bitcoin. After hitting fresh highs earlier in the year, it fell more than 17% in November and briefly traded near a seven‑month low, making this its second‑worst month of 2025. Heavy ETF outflows and short‑term traders bailing out did most of the damage.

    That backdrop matters because Atrahasis now holds a small, deliberate Bitcoin slice alongside its core of global stocks, bonds, REITs and cash.

    Global stocks: still the core engine

    I kept feeding the boring core.

    My main global equity holding remains iShares Core MSCI World (IWDA), which tracks the MSCI World index across 23 developed markets. Over three small trades in November, I added 90 units of IWDA at prices around U$126.

    These buys nudged the portfolio slightly closer to my 40% global equity target without trying to time anything fancy. Markets were wobbly when I added, which is exactly when it feels least comfortable to buy and most important to follow the plan.

    IWDA remains the main “growth engine” of Atrahasis: hundreds of companies, across many countries, all bundled into one very boring, very useful ETF.

    Bonds: the steady ballast

    With sentiment swinging back and forth on interest rates, the safer side of the portfolio quietly did its job.

    Singapore REITs & income: getting paid to wait

    Singapore REITs have been slowly healing as rates stop marching higher and yields settle back into the mid‑5% range. They’re no longer market darlings, but that’s fine by me. At these levels, they’re back to doing what I want them to do: grind out income while I wait.

    I also continued to build up my lodging and hospitality exposure. In November I added more CapitaLand Ascott Trust (HMN), turning it into a meaningful long‑term position in the income sleeve. The exact trade details sit in the transactions section above, but the spirit is simple: keep leaning into solid, diversified REITs when yields are still attractive.

    November itself was a classic “pay month” for Singapore.
    First REIT, Lendlease Global Commercial REIT, AIMS APAC REIT and Frasers Logistics & Commercial Trust all sent in distributions. DBS delivered the star payout with S$1,440 of dividends on its own. Together, the REITs plus DBS added about S$4,500 of fresh cash to the portfolio.

    Overseas, my US energy pipeline holding PAA chipped in as well, paying about US$170 before withholding tax. The Australian income stream continued too, with my AUD cash and bond sleeve generating another chunk of interest.

    All in, November’s income engine provided roughly S$4.5k, A$560 and US$170 in gross distributions across the portfolio. For a month where prices mostly wobbled sideways, that’s a nice reminder of why I like having an income spine running through Atrahasis. Those cashflows can either be redirected into whatever’s cheap, or used to quietly bulk up the safer sleeves without me having to inject new money every time.

    The plan here hasn’t changed: keep REITs and dividend stocks at sensible weights, let them do the heavy lifting on income, and use their payouts to rebalance into weakness rather than chase whatever happens to be hot.

      Bitcoin: leaning into discomfort

      Bitcoin had a rough month, dropping sharply from recent highs as ETF flows cooled and fast money headed for the exit. For most people, that kind of move feels scary. For my tiny allocation, it was simply a live test of whether I’d actually follow my rules.

      Instead of reacting to the noise, I stuck to the script. I made a series of very small buys spread across the month, adding about 0.085 BTC in total — roughly US$7,800 of new capital at the time. No heroics. No “all‑in on the dip.” Just steady dollar‑cost averaging into a pre‑defined, capped risk bucket.

      If Bitcoin keeps sliding, the position will stay small relative to the overall portfolio and I’ll keep accumulating at better prices within that budget. If it recovers, these uncomfortable buys will have done their job. Either way, the key is that this slice is sized so it cannot sink the ship.

      How it all fit together

      On paper, November won’t go down as a spectacular month for the Atrahasis Portfolio. Global stocks were roughly flat, tech was a little soft, bonds were gently positive, and Bitcoin was sharply down. The end result felt more like a sideways walk than a sprint.

      Behaviour‑wise, though, it was an important month:

      • Equities: I kept feeding the global core through IWDA top‑ups, instead of trying to outguess the next headline.

      • Bonds & cash: Short‑dated Treasuries and cash remained the quiet grown‑ups in the room, keeping overall volatility in check while still earning something.

      • REITs & dividends: Singapore REITs, DBS and overseas holdings combined to throw off around S$4.5k, A$560 and US$170 in income, which now sits ready to be redeployed.

      • Bitcoin: The newest, noisiest member of my Alternatives sleeve reminded me why position sizing and rules matter more than bravado or vibes.

      Put differently: when one risky sleeve (Bitcoin) went through a proper drawdown, other parts of the portfolio (short‑dated bonds, cash, income REITs, DBS) quietly absorbed the drama. That’s exactly the trade‑off I signed up for when I chose a diversified, income‑friendly structure instead of a pure‑equity rocket ship.

      Looking ahead to year‑end

      Going into December, the playbook stays boring on purpose:

      • Keep funnelling fresh cash into IWDA as the long‑term growth core.

      • Maintain a solid bond and cash cushion via short‑dated Treasuries and the AUD cash sleeve.

      • Gradually build Singapore REIT and dividend positions while yields remain interesting.

      • Treat Bitcoin as a tiny, volatile satellite governed by rules and sizing, not emotion.

      In a month where headlines shouted about corrections, valuations and crypto drama, the Atrahasis Portfolio mostly just stuck to its script: collect income, rebalance on dips, and let time do the heavy lifting.

      I Let an AI Audit My Supplement Stack. It Found Problems I’d Ignored for Years.

      Disclaimer: I am a blogger, not a doctor. The following article details a personal experiment using Artificial Intelligence to review my health habits. This information is for educational and entertainment purposes only and does not constitute medical advice. Never stop, start, or change the dosage of prescription medications (such as statins) or supplements without consulting a qualified healthcare professional. Interactions can be complex and individual.

      Introduction

      I sometimes scroll the Chrome Discover feed on my phone, and a few days ago, while scrolling, I caught a reference to a new study published in late 2025 in Cell: Comprehensive human proteome profiles across a 50-year lifespan reveal aging trajectories and signatures.

      I managed to get my hands on the full text of the paper and the findings were fascinating. Researchers had mapped how the human proteome (the entire set of proteins expressed by our genome) shifts over five decades. The takeaway wasn't just that we age; it’s that aging is biological, measurable, and systematic.

      Even more striking were the inflection points: specific milestones: clustered around ages 45 and 60, where the body undergoes rapid molecular shifts, rather than just a slow, steady slide. Seeing the number 45 resonated deeply, as it is uncomfortably close to my own age.

      I put down my phone and looked at the side of my workdesk where I keep my supplements. Sitting there was my chaotic "supplement graveyard",  a cluster of bottles I’ve accumulated over the last few years. A multivitamin here, a heart-health pill there, something a podcast recommended in 2022.

      The contrast was jarring. Science is measuring aging with molecular precision, and I’m combating it by randomly popping pills whenever I remember to, usually right before brushing my teeth.

      I realized I needed a second opinion. Not just a Google search, but an audit. Since the new Gemini 3 Pro had just launched with rave reviews for its reasoning capabilities, I decided to hire it as my temporary, unpaid biological consultant to perform a limited AI health audit.

      I wanted to know: Is my routine actually supporting my longevity, or am I just making expensive urine? And, true to the spirit of Atra-Hasis, how does extending my "healthspan" change the math of my financial independence?

      Here is what happened when I let an AI take apart my daily supplement routine.

      Asset Allocation Strategy

      Some of the supplements i take daily

      From Proteome Papers to Pill Bottles

      I uploaded the full PDF of the Cell paper to Gemini. I started our session by asking it to synthesize the findings and apply them to my context.

      "Based on what we know about proteomic aging trajectories from the paper," I asked, "what are the low-hanging fruits for me to incorporate into my supplement strategy?" 

      Gemini’s synthesis was sharper than I expected. It focused heavily on maintenance and highlighted a key concept from the paper: the "Senohub."

      The study identified the Aorta (the main artery) as a tissue that ages earliest and acts as a "Senohub," spreading inflammatory signals to other organs. This made the AI's lifestyle recommendations hit harder:

      • Zone 2 Cardio: Not just for "fitness," but specifically to maintain vascular elasticity and delay the aorta's transition into a senescence generator.
      • Blood Pressure Control: The silent killer of longevity.
      • Heat Shock Proteins: Via sauna use, to aid protein folding (highly relevant to a paper on the proteome).
      • Nutrient Timing: Not just what you eat, but when.

      I was already doing the cardio (and counting my scalding hot showers as "heat exposure"). But the "timing" point stuck out. That’s when I decided to bare my soul (and my medicine cabinet) to the machine.

      The Sleep Sabotage

      The first thing Gemini flagged was the timing of the multivitamin and my Ginkgo supplement.

      "You are taking a high-potency B-Complex (included in your multivitamin) and a cerebral stimulant (Ginkgo) right before attempting to enter deep sleep," it noted. "B-vitamins are co-factors in energy production, and Ginkgo Biloba can increase alertness and cerebral blood flow. While they don't have caffeine, they are biologically stimulating and could be interfering with your sleep architecture."

      I paused. I had been struggling with waking up groggy recently, despite getting "enough" hours. I had assumed it was stress or too much screentime. I never considered that my "health" habit was keeping my brain buzzing at 11:00 PM.

      Gemini advised shifting both the multivitamin and the Ginkgo to breakfast or lunch immediately.

      The Statin, CoQ10, and BioPerine Triangle

      Then we got into the more delicate territory: my prescription statin and how it fits with my supplements. This was where the AI impressed me by spotting issues a human might miss.

      I take Rosuvastatin daily. It is well-documented that statins can deplete the body's natural levels of CoQ10, which is why I supplement it. 

      Here’s the issue: the CoQ10 product I take also contains BioPerine (piperine), a black pepper extract that’s marketed as an “absorption enhancer.”

      Gemini pointed out that piperine has been shown in some studies to affect how the body handles certain drugs and nutrients, by influencing enzymes and transporters involved in metabolism and absorption. The human evidence at typical supplement doses is limited and often theoretical, but it was enough to raise a simple question:

      If I don’t need to take my statin at the exact same moment as an absorption enhancer, why create extra uncertainty?

      Rosuvastatin is less dependent on some of the classic pathways people worry about (for example, it relies less on CYP3A4 than statins like simvastatin), and I didn’t find strong evidence that my specific combo is dangerous. Still, the overall message I took away was: when you’re combining prescription meds with “bioavailability boosters,” it’s reasonable to be cautious and to loop in a doctor or pharmacist.

      So here’s the personal experiment I landed on, not a general recommendation:

      1. CoQ10 (with food) in the morning or lunch. (CoQ10 is fat-soluble and gives energy, which was another reason not to take it at night).
      2. Rosuvastatin in the evening.

      Gemini also nudged me to look into Ubiquinol (the reduced form of CoQ10), which may be better absorbed as people age. That’s something I’ll discuss with my doctor before switching, rather than just swapping capsules on my own.

      None of this is medical advice. It’s simply how I used AI to surface a potential interaction, then chose a conservative timing change while I seek a professional opinion.

      Redesigning the Stack and the Process

      I didn't just take the Gemini's word for it. I spent the next evening cross-referencing its claims against reputable medical sites and also its cousin ChatGPT 5.1 Pro.

      The verdict? It was mostly right. B-vitamins and Ginkgo could disrupt sleep. CoQ10 is better taken with fat in the morning. And spacing out absorption enhancers from prescription meds is just good hygiene.

      I rebuilt my protocol from first principles:

      1. Morning (breakfast): Life Extension Multivitamin + CoQ10 + Omega-3s + Ginkgo biloba. (Fuel for the day, and keeping things simple).
      2. Pre-Bed: Magnesium Glycinate (supports relaxation) + Rosuvastatin.

      The Early Results

      I’ve been on this AI-audited routine for a few days now, and the difference isn't a placebo.

      My Apple Watch (using the AutoSleep app) tracks my sleep, and for the last three nights, I have exceeded 3 hours of Deep Sleep. Before this, I struggled to get past 1.5 hours.

      Of course, I need more data to confirm the trend, but the contrast is there. I’m no longer waking up feeling like I spent the night solving algebra equations, and my routine finally feels intentional.

      How to Use AI for Your Own Health (Without Being Reckless)

      If you want to perform this limited AI health audit yourself, do not treat Gemini or ChatGPT as a doctor. Treat them as a research assistant who has read every abstract but has zero clinical experience.

      What to Provide the AI

      To get good results, you need to be radically specific:

      • The Full List: Every supplement, brand, and dosage. A picture of the back of the supplement bottle, showing its ingredients, is also good.
      • Prescriptions: List everything and dosages.
      • Timing: When do you take them?
      • Goals: "I want to improve energy," or "I want to lower inflammation."
      • Biomarkers: If you have recent blood work (cholesterol, Vitamin D levels), reference it.

      Good Ways to Use AI

      • "Check for Interactions": Ask it to cross-reference your list for drug-nutrient or nutrient-nutrient interactions.
      • "Audit for Timing": Ask what time of day is optimal for absorption and sleep.
      • "Identify Redundancies": Ask if you are double-dosing on anything (e.g., getting Zinc from both a multi and a ZMA supplement).

      The Pitfalls

      • Hallucinations: AI can invent studies. Always ask for sources or verify claims via Google/PubMed.
      • Nuance Blindness: AI tends to be generic. It doesn't know your liver function or genetic history unless you tell it.
      • The "More is Better" Trap: AI might suggest adding things. Be skeptical. Subtraction is often the best medicine.

      Longevity, Healthspan, and Financial Planning

      Why am I writing about CoQ10 interactions on a finance blog?

      Because Atra-Hasis is about the systems that sustain us. We spend thousands of hours optimizing our asset allocation, tweaking our Safe Withdrawal Rates (SWR), and minimizing tax drag.

      But biological aging is the ultimate "inflation." It erodes your most valuable asset: your ability to enjoy the wealth you're building.

      If I successfully extend my healthspan, e.g. if I am hiking at 80 instead of sitting in a chair, that changes my financial plan fundamentally:

      1. The Time Horizon: My portfolio might need to last for 40 years of retirement or more, not 30. That might require lowering my SWR from 3.25%.
      2. Healthcare Costs: The most expensive years are the final ones. A healthier 80-year-old might spend less on chronic care but needs a larger buffer for a longer, fuller life.
      3. Human Capital: Improved health means I have the option to work longer on projects I love, reducing sequence-of-returns risk.

      Using AI to audit my health is exactly like using a Monte Carlo simulation to audit my portfolio. It’s about finding the weak points, checking the correlations (interactions), and optimizing for durability.

      Conclusion

      Gemini 3 Pro didn't save my life, but it arguably improved my nights. It acted as a mirror, showing me that my "health routine" had become a mindless habit rather than a strategic protocol.

      We are entering an era where we can have a hyper-intelligent co-pilot for our biology. It’s on us to use it wisely, to ask the right questions, fact-check the answers, and realize that staying healthy is the longest-term investment we’ll ever make.

      Audit your stack. Check your timing. And sleep well.